-LRB- CNN -RRB- -- Louisiana authorities said Tuesday they found the body of a missing 6-year-old girl , stabbed and stuffed in a trash can down the street from her home .

Ahlittia North had been missing since Saturday morning . Her mother awoke to find her gone from their apartment in the New Orleans suburb of Harvey .

Late Tuesday night , authorities charged Matthew Flugence , the nephew of Ahlittia 's stepfather , in the girl 's death .

The Jefferson Parish Sheriff 's Office said Flugence , 20 , often babysat for her .

Flugence was arrested after he was spotted walking along a road in the area . He had a knife on him , Sheriff 's Col. John Fortunato said .

Witnesses told authorities that Ahlittia was a friendly , outgoing child who always wanted to be first at the door when the doorbell rang , Normand said .

After she was reported missing Saturday , investigators spent all day combing her neighborhood , looking in alleys , Dumpsters and boarded-up fourplexes . They found a pool of blood in one of the buildings , Normand said , and when DNA results came back Monday evening showing the blood belonged to Ahlittia , investigators searched the area again .

That 's when they found the girl 's body in a garbage can , wrapped in a blanket from her house and covered in a garbage bag , Normand said .

Investigators looked at the garbage can during their first search of the neighborhood , so they know the body was put inside sometime after Saturday -- but they still do n't know when , he said .

It 's possible Ahlittia 's body was placed there so the garbage trucks would take it away . Normand said garbage collection in the neighborhood happens Tuesday mornings .

Ahlittia suffered four stab wounds -- two to her neck , likely the fatal wounds , and two to the abdomen , Jefferson Parish Coroner Gerald Cvitanovich said . She also had bruises to the front and back of her head , shoulder , lower back , and lower extremities .

Cvitanovich said were no obvious signs during an autopsy of sexual assault .

Flugence 's brother Russell , 21 , was arrested for obstruction of justice in the case , Normand said . Russell Flugence had information about the crime that he did n't come forward with , and he also had information implicating his brother , the sheriff added .

CNN 's Joe Sutton contributed to this report .

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NEW : Police make an arrest

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Authorities say Matthew Flugence , 20 , babysat the girl in the past

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Ahlittia North was missing since Saturday morning

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Flugence 's brother is arrested for obstruction of justice